'Supernatural' boss explains exit

Supernatural creator Eric Kripke has explained his decision to step down as showrunner after the fifth season finale.

He told Entertainment Weekly that he had decided to take a step back from the series once it had completed its original five-year story arc.

"We were reaching the end of this five-year story line [so] I thought the timing was right." he explained. "I knew that we were closing this chapter and opening a new one. It felt like it was the right time to take a step back and focus on new projects".

Kripke also confirmed that he had no concerns about leaving producer Sera Gamble in charge.

"[My decision to leave] was a lot about Sera and her enthusiasm and her ambition. [To] have someone who has a fresh perspective and a fresh energy on these characters and this universe is healthy for the show. Supernatural has always been a show about reinvention."

He revealed that the show would change and develop under Gamble's supervision.

"Sera’s [increased] involvement really helped guarantee that this season is going to feel a little different, a little fresher. She has a different sensibility [to me]."